Nobody but you!

The warm man's song is from IWISTAO HIFI 4 Inch Full Range Labyrinth Speaker plus single-ended class A 2x7W parallel 6P14 vacuum tube power amplifier.

The music source of notebook is connected with a CSR64251 Bluetooth decoder via Bluetooth wireless connection, and music player is foobar2000.

Diyer said that it is easy to assemble it, you may fix the boards with screws and nuts after coat glue between the boards, then use a hand saw to saw the ribs, easy to cut when assembled.

The Cantonese song "The Love Riverside" from 300B tube power amplifier + CD player + passive preamplifier + IWISTAO 6.5 inches full range labyrinth speaker

This 300B single-ended tube amplifier adopts the famous Audionote circuit. Its power transformer carefully wounded by British Red Bull iron core. The advanced HI-FI design without large loop feedback makes the sound delicate and lingering, and rich musical.

And, The 300B single-ended output transformer uses British amorphous high-grade C-type iron core that has a unique advantage, especially when he static operating point is 80ma or below , it can give full play to the advantages of the output transformer. After actual measurement and listening, the voice is very vivid, clear, low-frequency tension is very balanced in three bands, excellent permeability and atmosphere feeling. Using high-quality enameled wire, lamination process, CNC drying, vacuum impregnation, well-designed 8C structure, to design to a perfect coefficient.

Passive preamplifier is made of GEC 48A original authentic 600:600 input transformers (second-hand disassembled one) ,which oscilloscope test bandwidth 20-20KHz;